While the earth contains enough potash to meet the increased global demand for crop production, some regions lack potash deposits needed for optimal food crop yields, the latest global assessment of the resource by the USGS shows.

A gold mine that straddles three provinces in northern Thailand has been given the go-ahead to reopen, following a month-long halt due to health concerns believed to be the result of heavy metal contamination.

Within the Earth’s crust, there is 1 gram of silver for every 12.5 tonnes of earth (27,600 lbs). This makes silver very difficult to find. To understand silver supply, we must first discover how economic silver deposits form.